ClassID:

174912

G02B27/4222 - CPC Classification

Classification description:

Optical systems or apparatus not provided for by any of the groups -; Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive optical element [DOE] contributing to image formation, e.g. whereby modulation transfer function MTF or optical aberrations are relevant in projection exposure systems, e.g. photolithographic systems

Recent Application in this class:
#1
20250302596
2025-10-02

INTRAORAL 3D SCANNING SYSTEM USING MIRROR AND STRUCTURED LIGHT PROJECTION WITH MULTIPLE PATTERN FEATURE TYPES

#2
20250258438
2025-08-14

LASER PROCESSING SYSTEM, LASER PROCESSING METHOD, AND METHOD FOR MANUFACTURING ELECTRONIC DEVICE

#3
20250195183
2025-06-19

INTRAORAL 3D SCANNING SYSTEM USING MIRROR AND STRUCTURED LIGHT PROJECTION

#4
20250032227
2025-01-30

Intraoral 3D scanning system using uniform structured light projection

#5
20240411140
2024-12-12

DISPLAY FOR AUGMENTED REALITY

#6
20240156577
2024-05-16

Dental scanning system with structured light projection

#7
20240138961
2024-05-02

Intraoral 3D scanning system using structured light projection

#8
20240103382
2024-03-28

IMAGING OPTICAL UNIT

#9
20240094536
2024-03-21

Device and method for compensating effects of pantoscopic tilt or wrap/sweep tilt on an image presented on an augmented reality or virtual reality display

#10
20230418085
2023-12-28

DISPLAY APPARATUS FOR PROVIDING AN ENLARGED DISPLAY AREA

#11
20230393322
2023-12-07

LIGHTGUIDE WITH IMAGE-FORMING DIFFRACTIVE IN-COUPLER

#12
20230236417
2023-07-27

Illuminating spatial light modulator with LED array

#13
20230108188
2023-04-06

Diffractive optical element, projection device, and measurement device'

#14
20220280269
2022-09-08

Intraoral 3D scanner employing light projectors with pattern generating optical elements

#15
20220197036
2022-06-23

Display for augmented reality

#16
20220107568
2022-04-07

EUV lithography system with diffraction optics

#17
20220066326
2022-03-03

Exposure apparatus, exposure method, and method for manufacturing semiconductor apparatus

#18
20210088802
2021-03-25

Diffractive optical element, projection device, and measurement device

#19
20200192206
2020-06-18

STRUCTURED LIGHT PROJECTOR, THREE-DIMENSIONAL CAMERA MODULE AND TERMINAL DEVICE

#20
20200103672
2020-04-02

Projector, electronic device having projector, and method for obtaining depth information of image data

#21
20190388194
2019-12-26

Light field intraoral 3D scanner with structured light illumination

#22
20190388193
2019-12-26

Intraoral 3D scanner employing multiple miniature cameras and multiple miniature pattern projectors

#23
20190377267
2019-12-12

Optical device and associated system

#24
20190346108
2019-11-14

Diffractive optical element and light irradiation apparatus

#25
20190178468
2019-06-13

Diffractive optical element and light irradiation apparatus

#26
20190079275
2019-03-14

Optical lens and projection device having the same

#27
20180081280
2018-03-22

Wavelength-based optical filtering

#28
20180039183
2018-02-08

Real-time variable parameter micro-nano optical field modulation system and interference lithography system

#29
20170371090
2017-12-28

Unidirectional grating-based backlighting employing an angularly selective reflective layer

#30
20160179017
2016-06-23

Compound imaging metrology targets

#31
20160127714
2016-05-05

Systems and methods for reducing z-thickness and zero-order effects in depth cameras

#32
20160004074
2016-01-07

Lithography pupil shaping optical system and method for generating off-axis illumination mode

#33
20150104094
2015-04-16

Defect detection system for extreme ultraviolet lithography mask

#34
20140347732
2014-11-27

Diffractive optics element, method for manufacturing diffractive optics element, and electronic device

#35
20140293422
2014-10-02

Diffractive optical element, design method thereof and application thereof to solar cell

#36
20110042587
2011-02-24

EUV projection lens and optic system having the same

#37
20090323040
2009-12-31

Telecentricity corrector for microlithographic projection system

#38
20090115991
2009-05-07

ILLUMINATION SYSTEM OF A MICROLITHOGRAPHIC PROJECTION EXPOSURE APPARATUS

#39
20090011368
2009-01-08

Exposure Method and Apparatus, and Electronic Device Manufacturing Method

#40
20080252888
2008-10-16

APPARATUS FOR POLARIZATION-SPECIFIC EXAMINATION, OPTICAL IMAGING SYSTEM, AND CALIBRATION METHOD

#41
20080204686
2008-08-28

Mask Structure for Manufacturing an Integrated Circuit by Photolithographic Patterning

#42
20060132920
2006-06-22

Blazed diffractive optical element and projection objective for a microlithographic projection exposure apparatus

#43
20050168820
2005-08-04

Achromatic fresnel optics for ultraviolet and x-ray radiation

#44
20050157398
2005-07-21

Head-up display mounted in vehicles, vehicles provided with the same and method of manufacturing the vehicles

#45
20050146789
2005-07-07

Apparatus for polarization-specific examination, optical imaging system, and calibration method

#46
13103874
2015-03-31

Optical systems and methods for absorbance modulation